Pass the long end over and around the short end. Continue behind the short end and wrap around the opposite side. Cross in front, pull up and forward by the neck, and then down under itself. Pull the long end to tighten the knot, then the short end to make snug against the neck.
Windsor Tie Knot Details
Orientation: The animation is presented as though the wearer were seeing his own reflection.
Origin: Ashley does not describe either of the Windsor Knots. The name was created in honor of the Duke of Windsor although he preferred a Four-in-Hand himself. However, he employed heavier material to obtain a satisfactory appearance.
Name: This knot is properly called the "Windsor". However, to distinguish it from the "Half Windsor" it has sometimes been called the "Full" Windsor.
Structure: The Windsor is bulky and symmetrical because the long end is wrapped around both sides before it is used to form the final knot. There are at least four variations; the version chosen for the animation is one of the more common.
Advantages: Makes a larger and more symmetrical knot. Also, for the version shown here, when the short end is pulled out, the knot does not require untying, it just falls apart – a pleasant surprise for this more complicated knot.